4 Wire Testing
2021-6-30u2002·u2002A high-quality Digital Multimeter (DMM) test lead of 24' in length with banana plugs at both ends will typically present a natural resistance of about 0.1 Ω. When using two such leads connected to the Unit Under Test (UUT), we can expect at least 0.2 Ω of the measured value to be contributed by the meter leads alone.
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